{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.948583,-0.316529,0.000000,0.000000,0.116542,-0.349257,0.929751,0.000000,-0.294024,0.881139,0.370330,0.000000,-1876187.101852,5622605.800931,2347280.295301,1],    "boundingVolume": {    "region": [1.892844,0.379351,1.892885,0.379378,0.000000,2.950069]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/28.b3dm"}}}